Hard hat



FIG. 1 is a perspective view of a hard hat, showing my new design;

FIG. 2 is a bottom perspective view of the hard hat thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a right side elevational view thereof;

FIG. 7 is a top plan view thereof;

FIG. 8 is a bottom plan view thereof; and,

FIG. 9 is a cross sectional view thereof.

CLAIM The ornamental design for a hard hat, as shown and described.